Kate and Gerry McCann have refused to feature in a Netflix documentary about the 2007 disappearance of their daughter Madeleine, MailOnline has learned.

The streaming service has not announced a release date for the eight-episode show but says it will feature new interviews with key investigators.

It follows the success of last year's one-part documentary on wrongly jailed American student Amanda Knox and the hit series Making A Murderer.

MailOnline understands the McCanns declined to be involved because the Metropolitan Police investigation into Madeleine - Operation Grange - is still underway.

The documentary will likely air before the McCanns learn the result of their appeal to the European Court of Human Rights regarding the Portuguese ex-police chief who claimed their daughter is dead and they are responsible.